ε-Constrained Method

The other method in priori approach is called an ε-Constrained method. This method defines a multi-objective problem into a single objective function and the other objectives are added as constraints. Then, the single-objective solver is used to solve the respective problem. In this method, the solution that are formed from ε-Constrained method can be proven to be a weakly Pareto optimal as the multi-objective problem has been reduced into single-objective optimization problem.